salaries of 45 college graduates who took a statistic course in college have a mean of 68,500 assuming a standard deviation, of 10,990, construct 95% confidence interval for estimating the population mean mu
Explanation:
We are given:
sample size= n = 45
sample mean = x = 61,300
sample standard deviation =18,246
Since the population standard deviation is not known we will use t distribution to find the confidence interval.
Confidence interval = 99%
Degrees of freedom= n - 1 = 45 – 1 = 44
Critical t value = 2.692
The 99% confidence interval will be:[tex](x-t_{critical}* \frac{s}{ \sqrt{n} }, x+t_{critical}* \frac{s}{ \sqrt{n} }) \\ \\ (61300-2.692* \frac{18246}{ \sqrt{45} }, 61300+2.692* \frac{18246}{ \sqrt{45} }) \\ \\ (53978,68622)[/tex]
Thus, the 99% confidence interval for the population mean is:
53978 to 68622
40 points! SAT Math help
Answer: y = 4
Explanation:
Since line a and line b are parallel, they will have the same slope.
slope (m) for line a is:
[tex]m=\dfrac{y_2-y_1}{x_2-x_1}=\dfrac{5-1}{4-(-2)}=\dfrac{4}{6}\quad \rightarrow \quad m=\large\boxed{\dfrac{2}{3}}[/tex]
Next, use the Point-Slope formula on line b to find y:
[tex]y_2-y_1=m(x_2-x_1)\\\\(x_1, y_1)=(-4,-4)\qquad (x_2,y_2)=(8.y)\qquad m=\dfrac{2}{3}\\\\\\y-(-4)=\dfrac{2}{3}\bigg(8-(-4)\bigg)\\\\\\y+4=\dfrac{2}{3}(12)\\\\\\y+4=2(4)\\\\\\y+4=8\\\\\\\large\boxed{y=4}[/tex]
According to theorists Guevara and Tse-Tung, what is the relationship between armed struggle and political consciousness?
Angles A and B are supplementary. The measure of angle A is twice the measure of angle B. What is the measure of angle B in radians?
Answer:
The answer is π/3 rad.
Explanation:
Given that ∠A and ∠B are supplementary angles so when both angles are added up, it will form 180°. ∠A is twice the measure of ∠B :
[tex]let \: B = θ \\ let \: A = 2B = 2θ[/tex]
[tex]2θ + θ = 180[/tex]
[tex]3θ = 180[/tex]
[tex]θ = 180 \div 3[/tex]
[tex]θ = 60[/tex]
Next, you have to convert 60° into radian by using the formula :
[tex] \frac{θ}{180} \times \pi[/tex]
[tex] \frac{60}{180} \times \pi[/tex]
[tex] = \frac{1}{3} \times \pi[/tex]
[tex] = \frac{\pi}{3} \: rad[/tex]
Need this quick, SAT
Answer:
6 is the correct answer
1. In a study of crime, the FBI found that 13.2% of all Americans had been victims of crime during a one-year period. This result was based on a sample of 1,105 adults. (a) Estimate the percentage of US adults who were victims at the 90% confidence level. (b) Estimate the percentage of US adults who were victims at the 99% confidence level.
Answer:
(a) The estimate the percentage of US adults who were victims at the 90% confidence level is (12%, 15%).
(b) The estimate the percentage of US adults who were victims at the 99% confidence level is (11%, 16%).
Explanation:
The percentage of Americans who had been victims of crime during a one-year period is, [tex]\hat p=0.132[/tex].
The sample selected was of size, n = 1105.
The (1 - α)% confidence interval for the population proportion is:
[tex]CI=\hat p\pm z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}[/tex]
(a)
The confidence level is 90%.
The critical value of z for 90% confidence level is, z = 1.645.
Compute the 90% confidence interval for the percentage of US adults who were victims as follows:
[tex]CI=\hat p\pm z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}[/tex]
[tex]=0.132\pm 1.645\times\sqrt{\frac{0.132(1-0.132)}{1105}}\\\\=0.132\pm 0.0168\\\\=(0.1152, 0.1488)\\\\\approx (0.12, 0.15)[/tex]
Thus, the estimate the percentage of US adults who were victims at the 90% confidence level is (12%, 15%).
(b)
The confidence level is 99%.
The critical value of z for 99% confidence level is, z = 2.58.
Compute the 99% confidence interval for the percentage of US adults who were victims as follows:
[tex]CI=\hat p\pm z_{\alpha/2}\cdot \sqrt{\frac{\hat p(1-\hat p)}{n}}[/tex]
[tex]=0.132\pm 2.58\times\sqrt{\frac{0.132(1-0.132)}{1105}}\\\\=0.132\pm 0.0263\\\\=(0.1057, 0.1583)\\\\\approx (0.11, 0.16)[/tex]
Thus, the estimate the percentage of US adults who were victims at the 99% confidence level is (11%, 16%).
4 of 100
Congressional Realty advertises all of its listed properties in the
Saturday newspaper. What form of advertising is this?
Product
Institutional
Self-dealing
Recreational
PREVIOUS
Answer:
Institutional
Explanation:
Institutional advertising is that which promotes the ideas, vision, mission, or philosophy of an institution, businesses, or organization, instead of promoting their products or services. It is often used to build a reputation for the institution and inform the consumers about it is or what it does. So, when Congressional Realty advertises all of its listed properties, it is trying to create an image for itself, it is using institutional advertising.
Aid awarded based on family income is called
Explanation:
Grants are a form of student aid that you do not need to work for or repay. That's why they're often called “gift aid.” Grants are typically awarded based on financial need, taking into consideration a family's income and assets. ... VSAC can help you access the full range of grant opportunities
Answer:
need-based
Explanation:
Methods in electrochemistry that can be used for the separation of proteins and enzymes?
Answer:
redox proteins can be attached to electrode surfaces in a “wired” configuration, that is, one that facilitates direct electron transfer. The feasibility of simple electroactive adsorption onto a range of electrode surfaces is illustrated, with a highlight on the recent advances that have been achieved in biotechnological device construction using carbon materials and metal oxides. The covalent crosslinking strategies commonly used for the modification and biofunctionalization of electrode surfaces are also evaluated. Recent innovations in harnessing chemical biology methods for electrically wiring redox biology to surfaces are emphasized.
Explanation:
"The Seven Habits in Real Life": I supervise a staff of about twenty-six housekeepers for the local hospital. We hire a lot of college kids because we can offer a flexible schedule that fits their college timetable. A couple of full-time employees came to me complaining about a college student on their team. They said that he was always late, that the quality of his work had dropped off and that he'd take hour-long lunch breaks instead of the allotted thirty minutes. By the time they finished their report, they were pretty worked up. I knew this student quite well. He was a good worker, but he had transferred recently to the state university sixty kilometres out of town. His commuting took a heavy toll on him. As I thought about his situation, I remembered the principles of being loyal to the absent, to avoid blaming and instead, to focus on the solution. I decided to do that. In the past, I would have been pretty direct and autocratic. However, I wanted the two complaining employees to feel part of the problem-solving process. So, we started talking about their relationship with him while remaining loyal. I asked them when the problems started. Then I told them about his transfer to the state university. With this information, they could sense why things were changing. I could tell that just identifying the root cause of the problem empowered them. Now they felt part of the solution. I told them what they could expect. I would meet with the student, work out a solution and if things didn't improve, we would get back together. Before understanding these habits of effectiveness, I would have called this young college student into my office and come out blasting, "These are the facts, if you don't straighten up and start getting to work on time and doing a decent job, I am going to cut your hours." Instead, when I called him into my office, I knew it was important to guard his self-esteem. "Umair," I said, "we need to talk about what is going on with you." Then he explained his situation. In response, I asked him, "How can we help you be successful? University is very important to you, and we also have a set standard of performance at the hospital. How can we work this out?" He suggested, "How about I cut my hours to two days a week? On those two days, try very best work. I can also devote all my energy on the other three days to university." This solution was quite simple. His co-workers are happy to work with him. He felt part of the solution and was able to maintain his self-esteem. My job became easier all the way around because I followed the lessons of "The Seven Habits". Answer the following questions: (8) A. What habits out of "The Seven Habits" are at display here? B. "Being loyal to the absent" is part of which paradigm of "The Seven Habits"? How does it help? C. How will you differentiate between Private Victory and Public Victory in the above story?
Answer:
a) Begin with the end in mind, First things first, Think win-win, Seek first to understand, then to be understood
b) “Being loyal to the absent” is part of "Seek first to understand, then to be understood"
c) The private victory can be seen when the narrator has achieved his objectives of solving this case. The public victory can be seen when the resolution of the case established a success in the social environment and at work.
Explanation:
"The seven habits" consists of establishing seven steps that people must practice in all situations of their lives, especially in the midst of conflicts, such as the one observed in the text above, to obtain successes. These habits are be proactive, begin with the end in mind, first things first, think win-win, seek first to understand, then to be understood, synergize and sharpen the Saw; Growth.
In the text shown above we can see that the narrator established the union of some of these steps in order to resolve the conflict, leaving everyone involved satisfied and without displacing a good student at the university. With that, we can say that when the narrator took the steps efficiently to resolve the conflict, he had a private victory, since it brought him personal satisfaction. However, the resolution of the conflict allowed for a social welfare and a better execution of the work, what can be called public victory.
there are no consequences when a lot of money is spent on one category only
Answer:
False.
Explanation:
Spending large amounts of money in one category will have many consequences that may even be good, but as this situation avoids the optimization of the money spent it is important to note that the probability of obtaining bad consequences will be great.
When all the money is used in a single category, the risks that this investment will suffer will have intense results. It is clear that when the investment yields good results to achieve this, they will be very good, but it is more recommended that amounts of money be spent in different categories, optimizing the use of money and allowing positive income security, because if a category fails, the others may compensate the investor.
A family has four children. If the genders of these children are listed in the order they are born, there are sixteen possible
outcomes: BBBB, BBBG, BBGB, BGBB, GBBB, BGBG, GBGB, BGGB, GBBG, BBGG, GGBB, BGGG, GBGG, GGBG, GGGB, and GGGG.
Assume these outcomes are equally likely. Let X represent the number of children that are girls. Find the probability distribution of
Find the number of possible values for the random variable X
Answer:
There are 5 possible values for the random variable X.
Explanation:
All of the following ane benefits to earning a college degree except
can you please give us the options :)
Answer:
There are many advantages and disadvantages of a college degree. For example, a disadvantage might be the cost of going to college.
Explanation:
The Aspire test takes
to complete for students in early high school.
O A. 3 hours, 45 minutes
OB. 1 hours, 40 minutes
O C. 4 hours, 10 minutes
OD. 2 hours, 30 minutes
Answer: C. 4 hours, 10 minutes
Explanation:
The ACT Aspire test is a method of checking the readiness of students for college as well as their understanding of Common Core standards. It is taken by students from grades 3 to 10. The main subjects it tests are Mathematics, English Language, Writing, Reading, and Science. The test is divided into sessions with the total time taken being 4 hours and 10 mins.
Answer: C. 4 hours, 10 minutes
Explanation:
The ACT Aspire test is a method of checking the readiness of students for college as well as their understanding of Common Core standards. It is taken by students from grades 3 to 10. The main subjects it tests are Mathematics, English Language, Writing, Reading, and Science. The test is divided into sessions with the total time taken being 4 hours and 10 mins.
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69 of 100
Licensee Carol is representing seller Cameron. Carol is currently a
free agent.
dual agent.
listing agent.
recording agent.
PREVIOUS
NEXT
Answer:
Dual agent.Explanation:
A dual agent is a person who represents both the seller and the buyer. In a dual agency, a buyer may hire an agent to represent him/her while the seller also hires an agent to represent his/her interest.Most of the time, both the seller and buyer have the same agent to negotiate a contract or transaction. In a dual agency, the agent is normally expected to represent both parties in a fair manner.If (sin x - cos x)^2 = 0.83, what is the value of (sin x + cos x)^2?
Answer:
-0.83
Explanation:
Because the signs are changed in each question so will be the signs of the answer
